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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】营养学家建议我国青少年要多吃奶、蛋、鱼、肉等含蛋白质丰富的食品，因为蛋白质是：( )
A.
人体主要的供能物质
B.
容易消化的物质
C.
人体生长发育必需的物质
D.
人体的备用能源物质
【单选题】Part ADirections: Read the following four texts．Answer the questions below each text by choosing A, B, C or D．(40 points)The long year of food shortage in this country have suddenly given way to appar...
A.
The abundant food supply is not expected to last
B.
Britain is importing less food
C.
Despite the abundance, food prices keep rising
D.
Britain will cut back on its production of food